At 113 decibels, the distinct low-tone sound from the DENALI SoundBomb Mini Motorcycle Horn is twice as loud as a typical 100-decibel disc horn. Designed to be a direct plug-and-play upgrade from your factory horn, requiring no additional relay or wiring harness as long as the original horn has blade-style electrical connections and can handle the 5 amp load. When stock isn't quite enough, be heard with the SoundBomb Mini. Some motorcycles horn circuits are not capable of powering this 5 amp horn. If your horn circuits' max amperage is less than 5 amps, or if you are unsure, simply add the DENALI plug-and-play harness (sold separately) to bypass the horn circuit and draw power directly from your battery. Technical Specs: 113 decibels at three feet. Operating voltage: 12 volts (11.7 volts required). Power draw: 5 amps. Single piece design. Dimensions: 3.25" x 3.4" x 2.5" (approximately).